R1223N332G-TR-FE

Overview

The R1223N332G-TR-FE is a step-down DC-DC controller IC manufactured by Nisshinbo Micro Devices. It operates with an input voltage range of 2.3 V to 13.2 V and provides a fixed output voltage of 3.3 V. The device supports PWM and VFM switching modes, features a maximum duty cycle of 100%, and includes built-in protection functions such as overcurrent protection and thermal shutdown. It is housed in a compact SOT-23-5 package.

Feature Summary

• Supports both PWM and VFM control modes for optimized efficiency across load ranges
• Features a wide input voltage operating range suitable for battery-powered applications
• Includes integrated overcurrent protection and thermal shutdown mechanisms

Applications

• Portable electronic devices requiring efficient power management
• Battery-operated systems utilizing single-cell lithium-ion or lithium-polymer batteries
• General-purpose step-down power supply circuits

Procurement Notes

Verify the specific suffix 'G' against official datasheets to confirm package type and tape/reel specifications. Ensure compatibility with required input voltage ranges and output current capabilities before integration. Cross-reference RoHS compliance status with current manufacturer documentation.

Selection Notes

Select this component when a fixed 3.3 V output is required from inputs up to 13.2 V. Consider the SOT-23-5 package size constraints and the need for external switching elements. Evaluate thermal performance requirements given the integrated shutdown features.

Part Context

This part belongs to the R1223N series of switching controllers designed for low-power applications. It serves as a core component in buck converter designs, offering a balance between efficiency and simplicity. The series is characterized by its ability to operate efficiently at light loads while maintaining stability under varying conditions.

Replacement Considerations

Direct substitutes within the same family include variants with different output voltages or input ranges, such as the R1223N332A-TR-FE. Verify pinout compatibility and electrical parameters before substitution.